I have noticed many games have attempted to build "open world" concepts, only to fail due to the limitations set upon them by the "box" of RPGs. we have not truly changed the underlaying systems of an RPG since DnD was invented, pick a class, level it, use the abilities specifically created for it, go from zone to zone designed for each specific range of levels (1-10, 10-20, etc) or make the levels truly useless by scaling all enemies to match (when you are level 10, so are the enemy mobs), the player is often also made out to be some super hero of their own story, a chosen one, as it were,